Oscillating-current lamp.



No. 834,496. PATENTED OCT. 30, 19 06. J. E. SBBLEY.

OSGILLATING CURRENT LAMP.

PPLIOATIOI FILED JULY 12, 1905.

-1o. allwhom it may concern.-'

UNITED STATES PATENT- OFFICE.

JAMES E. ISEELEY, or Los ANGELES, CALIFORNIA; AssIGiIoR TO SYUHRONOUSSTATIC 00., OF Los, ANGELES, CALIFORNIA, A

CORPORATION OF CALIFORNIA.

' OSCVILLATING-CURRENT LAMP.

- No. sa4,4ee.

Be it known that: I, JAMES SEELEY, a

citizen of the United States, residing at Los Angeles, in the .coun'tyofLos Angeles and State of California, have invented a new and usefulOscillating-Current Lamp, of which the following is a specification.

The.v main .object of this invention is to provide means for produc'rays of definite characterfor exam 1e, v i dlet rays.

A further object 1sto provide means for this purposewhich willbe simpleand cheap in construction and safe inoperation.

The accompanying drawings illustrate the I invention.

Figure *1 is a verticallongitudinal section of the lamp. Fig. 2 is atransverse section forming t e side wal or .peripheralcasing of Y thelamp.

4 deslgnates a back member or disk, and 5 a front member or disk, saiddisks bein arranged, respectively, at back and front the lam andengaging the primary coil, which is A hel inengagement therewith by anysuitcentral openin able means, such as tie-bolts 6. The back member 4may be provided with any suitable .supporting means, here indicated as arod 7, and the'front member may have a 8 for insertion or attachment ofany suitable applicator used in surgical operations or generally for thepassage of the rays from the electrodes. Said electrodes may beremovably supported in their supporting-standards 9 10, as by means ofscrews 3, said standards extending inwardly from the peripheral wall ofthe lamp-that is to say, from the primary coil, the upper standard 10being insulated from said wall by an insulating-block 11 and the lowerstandard 9 being connected to the outer end or portion of t e primarycoil, being provided, for example, with a screw-threaded portion 9,working in a metal nut or head 12,

secured to the outer turn of the primary coil. The standard 8 has aninsulating knob or Specification or Letters Patent. Application filed miz, 1906. Serial No. 209,320.

- the rear 0 coil 2', and electrodes 3,

the transformer to periodica Patented Oct. so, 1900.

i handle 13 onits outer end for manipulation thereof. 14 designates afastening-nut.

The primary coil consists of a few turns of comparatively heavy ribbonor strip metal wound in spiral form and engaging in grooves 15 in thefront and back plates 5 4.-

Secondary coil 2 consists of a much lar er number of turns of smallerribbon, a so wound in spiral'form to form a flat or disk coil, whichfits within the coil 1 and rests against or close to the back member 4,this bon being narrower than that of the rimary coil,so as to leave aspace or cham or 16 within the primary coil and in front. of thesecondary coil. Said seconda winding 2 is insulated between the turns onoth front and back faces by suitable insulation 24,

such as built-up mica. The electrodes 3 are located ad'acent to oneanother directly in f the opening 8 of the front plate of the-lam ,sothat the ra s issuing from the discharge etween said ezactrodes willpass directly through said ope 22 23 designate binding-posts connecte tothe primary coil. The lower electrode 3 is connected di- -rectly toouter end of coil 1, said coil havingaperforation 1 through its windingsto ermit of passageof standard 10 for said e ectrodes; The upperelectrode 3 is connected by wire 25 to the inner endof coil 2.

20, including primary co' 1 of the amp. The alternations in thesupply-circuit operate through 1y char ethe condenser, which dischargesthrou h t e circuit including the spark-ga an primary coil 1, said crcuit being of owimpedance, so that the oscillations develo ed thereinwill be of high frequency and 'of' arge quantit have found that withsuch high-frequency oscillations the violet rays are developed in largeamount without the use of extremel high potential of oscillatingcurrent, an the lamp is thereby rendered comp aratively economical andsafe in operation.

' that would be dangerous to the operator.

Electrodes 3 are of iron in case violet rays are to be produced; but thematerial of the electrodes maybe varied according to the character ofthe discharge or light desired.

What I claim is 1. A lamp comprising/a primary coil and a secondary coilwithin the primary coil, a discharge-circuit connected to include theprimary and secondary coils 1n series, and electrodes connected in thedischarge-circuit and located in the space within the primary coil, thesaid primary coil forming a peripheral casing for the lamp, and frontand ack plate members secured to the primary coil to complete the casingfor the lamp, said front light.

2. A lamp comprising back and front plate members, the front platememberhaving an opening, a primary coil located and supported betweensaid members to form a peripheral wall of the lamp, a secondary coilwithin the primary coil, said secondary coil being of smallerlongitudinal dimensions plate having an opening for passage of withinthe primar coil and in front' 0 the secondary coil, an electrodesarranged within said space in the rear of the aforesaid openingiin thefront plate member, saidelectrodes eing connected to be energized bysaid coils.

In testimony whereof I have hereunto set my hand, at Los Angeles,California, this 3d day of July, 1905.

JAMES E. SEELEY.

In presence of- ARTHUR P. KNIGHT, FRANK L. A. GRAHAM.

